Automatic and manually operated lathe



S." GLC) i"WSH ET AL.

AUTOMATIAND MANUALLY OPERATED LATHE 2 Sheets-Sheet l Filed Nov. 26, 1948 m T I, Tw. E n V am www.. GG. A m NR EA HM Mw l r N. 6 uw. V EN N e o r f A Patented May 22, 1951 OFFICE AUTOMATI-C AND MANUALLY OPERATED LATHE Stephen Globash and Mario A. Guiliano, New York, N. Y.

Application November 26, 1948, Serial No. 61,952

This invention relates to a lathe which may be controlled manually or automatically.

An object of the invention is the provision of a lathe having a tail stock which may be moved manually or automatically towards the head stock while the tail stock is shifted laterally, either manually or automatically for performing special operations on a piece of work, provision being made to retain the tail stock stationary when desired. The tool rest also being shiftable automatically or manually across a longitudinal path for the rest.

A further object of the invention is the provision of a lathe in which is incorporated a plurality of trains of gears for automatically driving the chuck in opposite directions, for moving a tool rest and the tail stock in a'longitudinal path in opposite directions and for shifting the tool rest and tail stock transversely of the longitudinal path in opposite directions, provision also being made for preventing transverse shifting of the tail stock and tool rest, means mounted for adjustment on a calibrated rod for engagement with instrumentalities on the tail stock and tool rest for stopping the stock and rest after they have performed their functions.

The invention is best understood from a consideration of the following detailed description in connection with the accompanying drawings, nevertheless, it is to be borne in mind that the invention is not confined to the disclosure but is susceptible of such changes and modifications as shall dene no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings:

Figure'l is a side View in elevation of our automatically and manually controlled lathe,

Figure 2 is a transverse vertical section taken along the line 2-2 of Figure l,

Figure 3 is a transverse vertical section taken along the line 3-3 of Figure 1,

Figure 4 is. a fragmentary transverse vertical section taken along the line 4-4 of Figure 1,

Figure 5 is a fragmentary transverse vertical section taken along the line 5--5 of Figure 1,

Figure 6 is a fragmentary longitudinal vertical section taken along the line 6--6 of Figure 5, and

Figure 'l is a fragmentary transverse vertical section taken along the line 1--1 of Figure 1.

Referring more particularly to the drawings, l0 designates a base which is adapted to be secured to a bench. A standard II is formed integrally with the base and carries a head stock I2 in which is mounted horizontally a shaft I3. A

4 Claims. (C1. 82-21) 2 chuck I4 of the conventional type has connections with the inner end of the shaft.

A horizontal sleeve I5 has one end fixed in the lower portion of the head I2 below the shaft I3 and in parallel relation therewith. This sleeve has a longitudinal slot I6 and teeth I1 'along the bottom. A gear I8 on a carriage I9 slidable on the sleeve meshes with the teeth I1. A shaft 20 supported in parallel flanges |00 depending from a bearing IUI on the carriage I9 and operated by a hand wheel 2i revolves the gear to cause reciprocation of the carriage in either direction along the sleeve for positioning the tool 22 relative to the work which is operated on.

A train of gears (Figures 1 and 2) is mounted on a plate 25 rockable on a shaft 26fdriven by a pulley 21 and a belt 28 operated in the usual manner by a motor (not shown). The plate is rocked by a handle 29 for a purpose which will be explained presently. Gear 30 is secured to the shaft I3 and meshes with an idler gear 3| on a stub axle 32 secured to a flange 33 projecting laterally from the top of the head stock I2. A driven gear 34 is secured to the shaft 26 and meshes with a pair of idler gears 35 and 36 mounted cn stub axle carried by the rockable plate 25. An idler gear 31 mounted on a stub axle 38 meshes with the gear 35. A gear 39 which rotates a worm 40 in the sleeve I5 is adapted to mesh with the gear 31 (Figure 2), or when the plate 25 is rocked will mesh with the gear 36 so that the worm may be driven in opposite directions.

A iiange 4I projecting laterally from the head stock I2 has an arcuate slot 42 adapted to receive the inner end of the axle 38. A nut threaded onto said inner end, is operated by a handle 43 for clamping the plate 25 in position when adjusted by the handle 29. Said plate 25 has an arcuate slot 45 receiving the reduced end 46 of the worm 40 so that the plate 25 may be rocked on the shaft 26 as a pivot. A nut 41 is screwed onto the threaded end 48 of the worm for securing the gear 39 on the worm. It will be noted from Figures 1 and 2 that the gear 39 has an integrally formed gear 49 of smaller diameter. Since the gear 39 may be withdrawn by the removal of the nut 41, it may be reversed so that the smaller gear 49 may mesh with the gear 31 or 36 for increasing the speed of rotation of the worm.

The carriage I9 for the tool 22 is moved manually by a hand wheel 50 or automatically. In the automatic operation, a worm gear 5| projecting through the slot I6 in the sleeve I5 meshes pivoted at |08 on the flanges.

with the Worm 40 and is rigid with a shaft 52 which is rotatably mounted in the parallel flanges depending from the bearing IOI, the latter bearing neatly receiving the sleeve I5, as shown in Figure 7. A plate 54 is oscillated on the shaft 20 by a lever 55 projecting through an arcuate slot 56 in said plate, (Figures 5 and 6). A gear 51 rigid With the shaft 20 is adapted to mesh with a gear 58 and a gear 59 mounted on stub axles secured to the rockable plate 54. The gear 58 meshes with a gear 60 also mounted on a stub axle secured to the rockable plate. A spur gear 6| is mounted on a-stub axle fixed to the bracket 53 and gears 59 and 60 are shifted into mesh alternately with the gear 6| when the plate 54 is rocked on the shaft 20 which acts as a pivot. Gear 6| meshes constantly with a gear G2 which revolves a shaft 63 and a worm gear 64 in mesh with a worm or screw 65 mounted for rotation on the carriage I9 and threaded into a bore in the carriage |9 for causing shifting of the carriage |9 transversely of the path of the carriage I9. The hand wheel 50 is secured to one end of the worm 65. The carriage I9 is guided by tracks 66 on the carriage I9 which tracks engage the under surface of the supporting block 49a.

The tool 22 is received by a slot 68 in a tool support 69 and clamped in place by a bolt 19. The support is carried by a slide 1|, triangular in cross-section, which is received by a dove-tail groove in a bed block 12 rigid with the supporting block 49a. A screw 13 is threaded into a longitudinal passage in the block and has a bearing 14 in a projection on the outer free end of the slide. screw for adjusting the slide and the tool 22. It will be appreciated that various other adjustments may be provided for positioning the tool by well-known conventional means, not described herein for performing the necessary functions on different types of work.

A tail stock 11 includes a work engaging member 18 which ismoved longitudinally by the usual manual means 19. The stock has a dove-tail groove 80 receiving a guide member 8| on a carriage 82 so that the stock may be shifted transversely of the path of the movable carriage 82 Which has a bearing 83 for the reception of the sleeve I5. Parallel flanges 84 depend from the bearing to provide a support for a shaft 85 operated manually by a wheel 86. A gear 81 is fixed to the shaft and meshes with the teeth |1 of the sleeve I for moving the carriage 82 longitudinally of the sleeve. A wormgear 88 meshes with the worm 40 for automatically shifting the stock 11 toward and away from the chuck I4 of the head stock l2, the gear revolving a shaft 90 which is rotatably supported in the parallel flanges 84.

The carriage I9 is provided with a depending lever 95 which has a fork 91 receiving the free end of a lever 98, pivoted at 99 on parallel flanges |00 depending from a bearing |0I receiving neatly the sleeve I5. The lever 95 is pivoted at 96 on said flanges. The other end of the lever 98 has an arcuate rack |02 adapted to engage the teeth of the worm gear 5I for effecting limited movement of the carriage I9 toward and away from the head stock l2, depending upon the direction of rotation of the worm 40.

Similarly the carriage 82 is moved by a depending lever |05 pivoted on the flanges 84 and having a fork |06 engaging one end of a lever |01 This lever has A manipulating knob 15 rotates the,

an arcuate rack |09 adapted to engage the teeth of the worm gear 88 when said lever is rocked by the fork.

A rod ||0 has calibrations I|| and has one end mounted in the standard II while the other end is secured by a post ||2 xed to the base |0. A stop I|3 is slidable on the rod but is secured in an adjusted position along the calibrations by a set screw II4. A second stop II5 is slidable on the rod II and is held in an adjusted position by a set screw I6.

The operation of our device is as follows: The tool rest is moved along the sleeve 5 by the carriage I9 manually when the wheel 2| is revolved and when the plate 54 has been so rocked on shaft 20 that the gears 59 and 60 are out of mesh with the gear 9| (Figure 6). However, the tool rest is moved longitudinally when either the gear 59 or the gear 50 is in mesh with the gear 6I since the gear 51 is revolved for rotating the shaft 2|) which revolves the gear I8 meshing with the teeth I1 of the sleeve I5.

The tool rest may be shifted manually and transversely of the longitudinal path by manipulation of the wheel 50 when the plate 54 has been rocked to a neutral position. When the plate is rocked in either direction one of the gears 59 or 60 will mesh with the gear 6I to cause rotation of the shaft 20 so that the worm gear 53 and the worm 65 will cause lateral shifting of the tool rest automatically in either direction desired.

Holes may be bored by the lathe. In this case, the tail stock 11 is moved automatically by the operation of the train of gears which are actuated by the worm 40 and the worm gear 88 when the lever |91 is rocked about its pivot |08 in the proper direction.

The lathe is capable of cutting key slots of any desired length in a shaft. The length of the slot is determined by the positions of the stop II 3 on the rod I0. The lathe will perform many kinds of work more rapidly because of the various automatic operations.

During the automatic operation of the tool rest by rocking the plate 54 in the proper direction, the stop is so positioned along the rod I0 so that lever 95 will engage said Stop to causing shifting of the lever 98 by the fork 91 of the lever 95 when the teeth |02 will engage the gear 5| and advance the carriage |9 in its longitudinal movement along the sleeve I5. The carriage 82 of the tail stock will be moved when the teeth on the lever |01 is caused to engage the worm gear 88 when the lever |05 contacts the member |I5, the movement being limited and being toward or away from the head stock I2v depending upon the direction of the rotation of the worm 40.

The worm gear 5I engaging the side edges of the slot I6 will cooperate with the gear I9 and the teeth I1 on the sleeve I5 to prevent rocking of the tool rest. Likewise, the worm gear 88, the spur gear 81, slot I6 and teeth I1 perform a similar function for the tail stock 11.

What is claimed is:

l. In a lathe, a base, a standard arranged adjacent one end of said base and secured thereto, a head stock including a rotatable chuck carried by said standard, a horizontally disposed sleeve arranged below and spaced from said chuck and having one end xedly supported in said head stock, said sleeve being provided With a longitudinal slot having a plurality of teeth along its bounding walls, a longitudinally disposed worm Within said sleeve and rotatably supported in and having one end projecting beyond said head stock, a gear on the projecting end of said worm, change speed gearing adapted to kconnect said chuck with said gear, a carriage slidably supported on said sleeve, a tool support positioned on top of said carriage and mounted for movement transversely of said sleeve, a shaft positioned transversely of and rotatably supported in said carriage, a second gear carried by said shaft and in meshing engagement with the teeth on said sleeve, a second transverse shaft positioned in parallel spaced relation with respect to said first named shaft and rotatably supported in said carriage, a worm gear carried by said second shaft and in meshing engagement with the worm in said sleeve, a lever positioned below and spaced from said second gear and pivotally supported intermediate its ends on said carriage, one end of said lever depending from said carriage, the other end of said lever being provided with a fork, a second lever positioned within and pivotally supported in said carriage and having one end in engagement with the fork of said first named lever, the other end of said second lever being provided with an arcuate rack engageable with said worm gear, a longitudinally disposed rod arranged below and parallel to said sleeve and fixedly supported on said standard and base, and a stop fiXedly supported on said rod and engageable with the depending end of said lever to thereby shift the rack of said second lever into engagement with said worm gear and cause limited longitudinal movement of said carriage.

2. In a lathe, a base, a Standard arranged adjacent one end of said base and secured thereto, a head stock including a rotatable chuck carried by said standard, a horizontally disposed sleeve arranged below and spaced from said chuck and having one end flxedly supported in said head stock, said sleeve being provided with a longitudinal slot having a plurality of teeth along its bounding walls, a longitudinally disposed worm within said sleeve and rotatably supported in and having one end projecting beyond said head stock, a gear on the projecting end of said worm, change speed gearing adapted to connect said chuck with said gear, a carriage slidably supported on said sleeve, a tool support positioned on top of said carriage and mounted for movement transversely of said sleeve, a shaft positioned transversely of and rotatably supported in said carriage, a second gear carried by said shaft and in meshing engagement with the teeth on said sleeve, a second transverse shaft positioned in parallel spaced relation with respect to said rst named shaft and rotatably supported in said carriage, a worm gear carried by said second shaft and in meshing engagement with the worm in said sleeve, a lever positioned below and spaced from said second gear and pivotally supported intermediate its ends on said carriage, one end of said lever depending from said carriage, the other end of said lever being provided with a fork, a second lever positioned within and pivotally supported in said carriage and having one end in engagement with the fork of said first named lever, the other end of said secondl lever being provided with an arcuate rack engageable with said worm gear, a longitudinally disposed rod arranged below and parallel to said sleeve and xedly supported on said standard and base, a stop fixedly supported on said rod and engageable with the depending end of said lever to thereby shift the rack of said second lever into engagement with said worm gear to cause limited longitudinal movement of said carriage, and means for effecting the transverse movement of said tool support, said means comprising a third gear spaced from said second gear and carried by said rst named shaft, a worm screw positioned transversely of and in threaded engagement with the bore formed in said carriage, a third shaft arranged transversely of androtatably supported in said carriage, a second worm gear carried by said third shaft and in meshing engagement with said worm screw, a fourth gear spaced from said second worm gear and carried by said third shaft, and gearing adapted to connect said third gear to said fourth gear.

3. In a lathe, a base, a standard arranged adjacent one end of said base and secured thereto, a head stock including a rotatable chuck carried by said standard, a horizontally disposed sleeve arranged below and spaced from said chuck and having one end fixedly supported insaid head stock, said sleeve being provided with a longitudinal slot having a plurality of teeth along its bounding walls, a longitudinally disposed worm within said sleeve and rotatably supported in and having one end projecting beyond said head stock, a gear on the projecting end of said worm, change speed gearing adapted to connect said chuck with said gear, a carriage slidably supported on said sleeve, a tool support positioned on top of said carriage and mounted for movement transversely of said sleeve, a shaft positioned transversely of and rotatably supported in said carriage, a second gear carried by said shaft and in meshing engagement with the teeth on said sleeve, a second transverse shaft positioned in parallel spaced relation with respect to said first named shaft and rotatably supported in said carriage, a worm gear carried by said second shaft and in meshing engagement with the worm in said sleeve, a lever positioned below and spaced from said second gear and pivotally supported intermediate its ends on said carriage, one end of said lever depending from said carriage, the other end of said lever vbeing provided with a fork, a second lever positioned within and pivotally supported in said carriage and having one end in engagement with the fork of said first named lever, the other end of said second lever being provided with an arcuate rack engageable with said worm gear, a second carriage carrying a tail stock spaced from said first carriage and slidably supported on said sleeve, a third shaft positioned transversely of and rotatably supported in said second carriage, a third gear carried by said third shaft and in meshing engagement with the teeth on said sleeve, a fourth transverse shaft positioned in parallel spaced relation with respect to said third shaft and rotatably supported in said second carriage, a second worm gear carried by said fourth shaft and in meshing engagement with the worm in said sleeve, a third lever positioned below and spaced from said third gear and pivotally supported intermediate its ends on said second carriage, one end of said third lever depending from said second carriage, the other end of said third lever being provided with a fork, a fourth lever positioned within and pivotally supported in said second carriage and having one end in engagement with the fork of said third lever, the other end of said fourth lever being provided with an arcuate rack engageable with said second worm gear, a longiaanmoetudinally disposed rod arranged'below and parallel to said sleeve and xedly supported on said standard and base, and a pair of spaced stopsA xedly supported on said rod and each engageable with the adjacent depending end of said rst and third levers to thereby shift the racks of said second and fourth levers into engagement with said rst and second Worm gears respectively and cause limited longitudinal movement of said rst and second carriages.

4. In a lathe, a base, a standard arranged adjacent one end of said base and secured thereto, a head stock carried by said standard, a horizontally disposed shaft rotatably supported in said head stock and having one end projecting from the latter, a gear on the projecting end of said shaft, a chuck projecting from the other end of said shaft, a horizontally disposed sleeve arranged below and spaced from Ysaid shaft and having one end xedly supported in said head stock, said sleeve being provided with a longitudinal slot having a plurality of teeth along its bounding Walls, a longitudinally disposed Worm within said sleeve and rotatably supported in and having one end projecting beyond said head stock, a second gear on the projecting end of said Worm, a vertically disposed plate positioned outwardly of said headstock and mounted for rocking movement on the projecting end of said Worm, a driven gear mounted on the outer face of said plate and adapted to be connected to a drive shaft, a flange exteriorly of said head stock, a rst idler gear carried by the outer face of said ange and in meshing engagement with the gear on the projecting end of said shaft and said driven gear, a train of gears including a pair of idler gears on the outer face of said plate and operatively connected to said driven gear, one of said pair of idler gears being in meshing engagement with said second gear upon execution of the rocking movement of said plate in one direction and the other of said pair of idler gears being in meshing engagement with said second gear upon execution of the rocking movement of said plate in the opposite direction, a carriage slidably supported on said sleeve, a tool supported on said carriage, a third. gear rotatably Supported in said carriage and in meshing engagement with the teeth on said sleeve, a worm gear positioned in parallel spaced relation with respect to said third gear and in meshing engagement with the longitudinal Worm in said sleeve, a lever positioned below and spaced from said third gear and pivotally supported intermediate its ends on said carriage, one end of said lever depending from said carriage, the other end of said lever being provided With a fork, a second lever positioned Within and pivotally supported in said carriage and having one end in engagement with the fork of said rst named lever, the other end of said second lever being provided with an arcuate rack engageable with said Worm gear, a longitudinally disposed rod arranged below and parallel to said sleeve and fixedly supported on said standard and base, and a stop xedly supported on said rod and engageable with the depending end of said lever to thereby shift the rack of said second lever into engagement With said worm gear and cause limited longitudinal movement of said carriage.

STEPHEN GLOBASH. MARIO A. GUILIANO.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 854,532 Runge May 21, 1907 1,027,496 Mills May 28, 1912 1,417,521 Haumann May 30, 1922 1,592,914 Verschoyle July 20, 1926 2,151,873 Senger Mar. 28, 1939 2,416,612 Cavanagh Feb. 25, 1947 FOREIGN PATENTS Number Country Date 77,410 Switzerland Sept. 2, 1918 

